[jboss-user] [jBPM] - adding a custom service to jbpm.cfg.xml

kelum_sv N do-not-reply at jboss.com
Wed Aug 25 20:51:19 EDT 2010

kelum_sv N [http://community.jboss.org/people/kelum] replied to the discussion

"adding a custom service to jbpm.cfg.xml"

To view the discussion, visit: http://community.jboss.org/message/559050#559050


*Using jbpm 4.4. WITH jboss-5.1.0.GA*

1 :I am also having this kind of issue at the moment . What i have done was extended  IdentitySessionImpl and created my own MyIdentitySession .and i have over right few methods createUser,createGroup what was already there in IdentitySessionImpl.

 public String createUser(String userName, String givenName, String familyName, String businessEmail)
        User user = null;
            user = findUserById(userName);
        catch (Exception ex)
        if (user == null)
            user = new UserImpl(userName, givenName, familyName);
            long dbid = EnvironmentImpl.getFromCurrent(DbidGenerator.class).getNextId();
            ((UserImpl) user).setDbid(dbid);
        UserImpl userimpl = (UserImpl) user;


return user.getId();

2: Then i created new MyIdentitySessionBinding by extending WireDescriptorBinding

public class MyIdentitySessionBinding extends WireDescriptorBinding
    public IWirkfloIdentitySessionBinding()
    public Object parse(Element element, Parse parse, Parser parser)
        ObjectDescriptor objectDescriptor = new ObjectDescriptor(MyIdentitySession.class);
        objectDescriptor.addTypedInjection("session", Session.class);
        return objectDescriptor;

3: Then this MyIdentitySessionBinding was registered using jbpm.user.wire.bindings.xml
  <!-- sessions --> 
 <binding class ="dd.ss.ss.MyIdentitySessionBinding" />

4: Added this file inside that jbpm-service.sar which inside JBoss deploy directory .

5 : Customised jbpm.cfg.xml as bellow

<jbpm-configuration jndi-name="java:/ProcessEngine">
  <import resource="jbpm.default.cfg.xml" />
  <import resource="jbpm.businesscalendar.cfg.xml" />
  <import resource="jbpm.tx.jta.cfg.xml" />
  <import resource="jbpm.jpdl.cfg.xml" />
  <import resource="jbpm.bpmn.cfg.xml" />  
  <import resource="jbpm.jobexecutor.cfg.xml" />
  <import resource="jbpm.console.cfg.xml" />
    <object class ="aa.bb.cc.MyIdentitySession" /> 

Whwn i try to use createUser,createGroup methods inside MyIdentitySession, it gives me NullPointer exception when accessing session[Hybranate ].

Hope there should be a configuration issue. Please assist me on this regards

Thank you


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